File-cabinet-type lock



June 4, 1968l 1'. SCHWARTZ 3,386,272

FILE-CABINET-TYPE LOCK Filed July 19, 1965 2 Sheets-Sheet l /f/ 4Z f8 4.2

46 .f5 H fo 48 f 46 53 Z 52 fw 447 ,z 7f3 y f5 fz gf l/Wf/V' JEROME SCHWARTZ June 4, 1968 J. scHwAR-rz FILECABINET-TYPE LOCK Filed July 19. 19655V 2 Sheets-Sheet 2 JEROME MII/[wma SC HWA R TZ United States Patent O 3,386,272 FILE-CABINET-TYFE MICK Jerome Schwartz, Philadelphia, Ila., assigner to Taylor Lock Company, Fhiladelphia, Pa., a corporation of Pennsylvania Filed Early 19, 1965, Ser. No. 473,083 3 Claims. (Ci. 7tl-81) ABSTRACT F THE DISCLUSURE This invention is concerned essentially with cylinder locks of the tile-cabinet type and apparatus for their manufacture, wherein the locks include a lockable plug rotatable in a body yand carrying a cam for operating a bolt between extended and retracted positions.

The instant invention relates generally to file locks of the type employed in file cabinets, and includes unique apparatus for use in manufacture thereof.

It is an important object of the present invention to provide a file-cabinet-type tubular lock wherein unique structural features affords economies in manufacture, and enable the manufacturer to easily produce lock constructions of the instant type having different functional characteristics, as desired.

It is a more particular object of the present invention to provide a unique lock construction and apparatus for manufacture wherein a file cabinet-type lock may be produced enabling an operator to optionally remove the key with the bolt locked in either of its retracted or released positions.

It is still lanother object of the present invention to provide a file-cabinet-type lock construction including a rotatable plug having wafer tumblers and rotatably mounted substantially centrally of the lock body to enable the lock body to be considerably reduced in size.

It is still a further object of the present invention to provide a novel apparatus for manufacture of cylinderlock plugs wherein the plugs may be selectively varied, as desired, to achieve the above-described functional differences.

The instant invention further provides a lock construction and apparatus for manufacture thereof having the advantageous characteristics mentioned in the preceding paragraphs, which are extremely simple in construction, entirely reliable in use, and which eect substantial economies in manufacture.

Other objects of the present invention will become apparent upon reading the following specification and referring to the accompanying drawings, which form a material part of this disclosure.

The invention accordingly consists in the features of construction, combinations of elements, and arrangements of parts, which will be exemplified in the construction hereinafter described, and of which the scope will be indicated by the appended claims.

In the drawings:

FIGURE 1 is -a top plan view showing a file-cabinettype lock of the present invention having a key inserted therein, and apart from a le cabinet;

FIGURE 2 is a longitudinal sectional View taken generaly along the line 2-2 of FIGURE 1, and partially illustrating a file cablinet in which the lock is mounted;

FIGURE 3 is a transverse sectional view taken generally along the line 3-3 of FIGURE 2, illustrating the lock in its locked condition;

FIGURE 4 is a transverse sectional view similar to IGURE 3, but illustrating the lock in its unlocked condition;

FIGURE 5 is a transverse sectional View similar to Patented .lune 4, 168

ice

FIGURE 3, but showing la slightly modified embodiment of the instant lock. construction;

FIGURE 6 is a transverse sectional view similar to FIGURE 4, but illustrating the lock embodiment of FIGURE 5;

FIGURE 7 is a longitudinal sectional view illustrating an apparatus of the present invention for use in manufacture of the lock plug of the instant lock;

FIGURE 8 is a sectional view taken generally along the line 8 8 of FIGURE 7, enlarged for clarity of understanding;

FIGURE 9 is a sectional view similar to FIGURE 8, but illustrating an alternative condition thereof corresponding to the lock construction of FIGURES 5 and 6; and

FIGURE 10 is a partial perspective view of an insert pin of the apparatus of FIGURE 7 removed therefrom.

Referring now more particularly to the drawings, and specifically to FIGURES 1 4 thereof, a ile-cabinet-type lock of the present invention is shown in FIGURE l and there generally designated 10. In FIGURE 2 the lock 10 is illustrated as assembled in a cabinet 11 or other suitable lock-mounting structure.

The lock 10 includes an elongate body 12 having a generally ovaloid transverse configuration, best seen in FIGURES 3 and 4. The forward end portion 13 of body 12 is slightly reduced, externally, to define a circumferentially extending, forwardly facing shoulder 14. The rearward or inner end region of the body 12 is bifurcated, as by a slot 15 extending inwardly through the inner end 16 and terminating in a rearwardly facing end wall 17. The slot 15 extends longitudinally inward or forward through the inner or rear body end 16 and extends transvcrsely through the body in substantial alignment with the major axis of the ovaloid cross-sectional configuration. Thus, the slot 15 opens transversely through the body 12 and serves to define of the rearward body portion a pair of generally parallel, rearwardly or inwardly extending legs 2) and 21. In addition, the upper and lower external surfaces of the body 12 are formed with grooves 22 and 23 extending longitudinally forward from the upper and lower ends of slot 15 to termini slightly forward of the shoulder 14.

Extending longitudinally inward or rearward from the front end 25 of the body 12 is a generally cylindrical opening or bore 26. The longitudinally extending opening 26 may be arranged coaxially within the body 12 and extends inward or rearward terminating short of the wall 17. At spaced locations about the interior of longitudinal opening 26 there may be provided one or more pair of longitudinally extending internal groves or recesses, as `at 27 and Z8. That is, an internal recess or groove 27 is formed in the opening 26 extending longitudinally on the upper side thereof and faces downwardly into the opening, while a lower groove or recess 28 extends longitudinally inward from the front body end 25 in a lower region of the opening Z6 and faces upwardly into the longitudinal opening. The upper and lower internal grooves or recesses 27 and 28 may each extend inwardly or rearwardly from the front body wall 25 and terminate short of the inner or rearward terminus of the bod opening 26. t

A transversely extending side opening 36 is formed in the body 12 extending transversely inward or downward through the upper side of the body and opening into the inner end of body opening 26. More specifically, the upper-side body opening 3d may be of noncircalar configuration and extend downward into the body just forward of the wall 17 and terminate in a bottom wall 31 spaced over the lower external body groove 23, The lateral dimension or width of upper sido opening 30 may be approximately equal to or slightly less than the diameter of generally cylindrical longitudinal opening 26. The opposite side walls of the transverse body opening 3d may be formed with circular cutouts 32 and 33, see FIG- URES 3 and 4, in extension of the longitudinal opening 26. The bottom wall 31 of the transverse opening 3i? may have its rearward region provided with a raised boss or step 34 having a recess or hole 3S, for a purpose appearing presently,

Rotatably inserted in the longitudinal opening 26, longitudinally coextensive therewith, is a cylinder-lock plug 36, having at its forward end a reduced extension or boss 37 formed with a key slot for receiving a key 38. In addition, the cylindrical plug 36 is formed with a series of transverse cutouts or slots 39 intersecting with the internal key slot and respectively provided with spring-biased, wafer tumblers 40. Upon removal of key 38 from the plug 36 the wafer tumblers 46 are resiliently urged `to project radially beyond the plug into at least one of the internal grooves 27 and 28, whereby the plug is locked against rotaation in the opening 26. Insertion of key 38 effects retraction of the l'tumblers 46 to permit rotation of the plug.

Inserted slidably in the side opening 30 for transversely extensile and retractile movement therein is a bolt, generally designated 42. The bolt may be of noncircular configuration for conforming sliding engagement in the side opening 30 and may be provided on its upper side with a rib or land 41 movable with the bolt between an extended position upward beyond the body 12, as in FIGURE 3, and a retracted position within the body side opening 30, see FIGURE 4. The bolt 42 may have its rear or inner side formed with a groove 43 extending upwardly through the bottom of the bolt and terminating short of the rib or abutment 41. Suitable resilient means, such as a coil compression spring 44 may be arranged within the groove 43, the lower end of spring 44 seating in hole 3S, and the upper end of spring 44 engaging with the end wall of groove 43 to urge the bolt upward.

On the forward side of the bolt 42 there is provided a forwardly facing recess or opening 46. The recess or opening 46 may face forwardly toward the rear or inner end of plug 36 and may be defined within a generally at, upwardly facing lower surface 47, and an inverted, generally V-shaped, downwardly facing upper surface 48. A boss or projecting cam i) extends from the rear or inner end of cylindrical plug 36 into the recess or opening 46. The cam 5@ is Of elongate conguration, see FIGURES 3 and 4, generally diametrically of the cylindrical plug 36, having one longitudinal surface 51 extending generally diametrically of `the plug. The longitudinal extent of cam 5G transversely of plug 36 is of a dimension less than the plug diameter, best seen in FIGURES 3 and 4. However, the cam 50 terminates at end portions 52 and 53, the former extending radially a greater distance from the center of cam rotation than the latter. Opposite to the longitudinal, generally flat cam surface 51, the cam 50 is provided with another longitudinal, generally flat surface 54. The longitudinal surface 54 is of less extent than the longitudinal surface 51, but is located at a greater radial distance from the center of cam rotation than the carn surface 51. The cam surfaces S1 and 54 may be generally parallel to each other, and spaced apart 180 degrees of cam rotation.

The longitudinal surface 51 is lowermost, and the bolt 42 is resiliently urged upward by spring 44 to engage the bolt surface 47 with the Cam surface 51, in a flat facing engagement. The cam surface 51 thus limits upward movement of bolt 42 -to the illustrated position with abutment 41 in its projected condition. Upon rotation of the plug 36 and its cam 50 in the direction of arrow 5S, the bolt surface 47 operates as a follower surface relative to the cam and the bolt 42 is urged downward against the force of spring 44. Upon 180 degrees of rotation of plug 36 in the direction of arrow 55, the cam 5t) assumes the condition of FIGURE 4 with cam surface 54 in at facing, limiting engagement with follower surface 47 to retain the rib or lug 41 retracted within the body 12. As the cam surfaces 51 and 54 are both substantially at and thus adapted for flat facing engagement with follower surface 47, and as the cam surfaces 51 and 54 are each substantially normal to a radius of plug 36, the extended and retracted conditions of respective FIGURES 3 and 4 are both highly stable.

In the latter condition, that of FIGURE 4, the bolt 42 has been retracted, and the key 38 may be withdrawn from the plug 36 to permit extension of tumblers 40 into the lower recess 28, for effectively locking the plug against rotation out of the position illustrated in FIG- URE 4. In order to limit rotation of plug 36, say with the key 33 inserted to retract tumblers 40, suitable stop means of conventional construction may be provided. For example, rotation of plug 36 in the direction of arrow 55 may be limited to the position shown in FIGURE 4, while plug rotation in the direction of arrow 57 may extend from the position of FIGURE 4 to a position beyond that of FIGURE 3 such that the relatively long cam end portion 52 effects retraction of bolt 42 without loeating the plug 36 in a position with respect to grooves 27 and 23 enabling the key 38 to be withdrawn.

The lock asembly 10 further includes a generally cupshaped cap 60 engaged over the reduced forward body portion 13 and having its open end terminating proximate to the body shoulder 14. The cap 6i? may have an end hole 61 rotatably receiving the forward-end plug boss 37, and portions of the cap overlying the external grooves 22 and 23 may be deformed therein to positively retain the cap in position on the lock body.

As thus described, the lock lil may be slidably engaged in a cabinet opening 62, the cabinet opening having a rearwardly facing shoulder 63 for retaining engagement with the upwardly projecting lug 41, A link 64 may be pivoted to the inner or rear end of body 12, as by a pivot pin 65 extending between legs 2) and 21, to urge the lock forwardly against the cabinet shoulder 63. Thus, upon retraction of the lug 41, in the manner described hereinbefore, the entire lock 19 may be shifted forward, the retracted lug passing into the cabinet opening 62.

By the instant lock construction the forward end of body 12 may be safely and attractively covered by the cap 6G to effect considerable economy in manufacture, including retention of the plug and neat and attractive finish. Further, it will be appreciated that the key 3S may be removed in the locked condition of FIGURE 2, as well as in the unlocked condition of FIGURE 4, as desired.

In the modified embodiment shown in FIGURES 5 and 6, the body 12, bolt 42, and spring 44 may all be substantially identical to those of the first-described embodiment. Indeed, the entire lock construction may be identical to that of FIGURES 1-4, with the exception of cam 50a.

More particularly, cam 50a is similar to cam 50 in having a generally flat, longitudinal surface 51a extending generally diametrically of cam rotation, and an additional generally ilat cam surface 54a substantially parallel to carn surface 51a and spaced from the latter radially of cam rotation. The relatively long end portion 52a of carn Stia may be essentially the same as relatively long end portion 52 of cam 50, however the relatively short end portion 53a of cam 50a is substantially longer than the relatively short cam portion 53 of cam 50.

In the locked condition of FIGURE 5, with the relatively long, longitudinal cam surface 51a seating against the follower surface 47, the bolt lug 41 being projected, the relationship is substantially identical to that of FIG- URE 3. However, upon rotation of cam 50a in the direction of arrow 55a, the end portion 53a engages the follower surface 47 to depress the latter and retract bolt 42. By the greater length of cam 50a, upon retraction of bolt 42 the cam end portion 52a moves into abutting engagement with the downwardly facing surface 48 of the bolt. This abutting engagement is shown in FIGURE 6, the cam 50a there being located in an unstable position, tending to return to the position of FIGURE 5 under the action of spring 44 in the direction of arrow 57a. Thus, by elongation of cam 50 to the dimension of cam 50a, the plug 36 is prevented from rotating to a stable unlocked position of the lock. The same abutting engagement of cam 50a with bolt surface 48 is encountered between cam end portion 53a upon rotation of cam 50a in the direction opposite to arrow 55a in FIGURE 5.

As it has in the past been the common practice to prevent key withdrawal except when the lock is in locked condition, the relatively elongate configuration of cam 50a may be desired.

The apparatus of FIGURES 7-10 is a feature of the instant invention enabling the above-described cylinder plug to be manufactured with either the cam S' or the cam 50a, as desired.

In particular, a die is generally designated 70, as for diecasting the plug 36. rIhe die 70 may include a main section 71 having a generally cylindrical cavity 72. The cylindrical cavity 72 is open at its upper end, as shown in FIGURE 7, and selectively closed by an upper die section 73. The lower or inner end surface 74 of cylindrical cavity 72 is formed with a depression 75. The depression 75 is of generally elongate configuration transversely of the cylindrical cavity 72, and has a maximum dimension less than the cavity diameter. In addition, a rod-shaped insert or pin 76 extends rotatably through the bottom or lower end wall of die section 71 and has its inner end 77 facing into the die cavity 72 through the lower end surface 74 of the die cavity. Further, the inner end 77 of pin or insert 76 is cut away, as at 78 and located to combine with the depression 75 to define a recess for forming a boss on the end of a cylindrical plug cast in the cavity 72.

As best seen in FIGURE 8, the depression 75 includes a longitudinally extending, relatively long side wall 80, and an opposite, generally parallel, longitudinally extending, relatively short side wall 81. Thus, the recess 75 is of elongate configuration having opposite end portions 82 and 83. The pin 76 extends into the recess 75 through the end portion thereof 83. The cut-away portion 78 of pin 76 combines with the depression 75 to define a recess having the configuration of cam 50 and located relative to the cylindrical cavity 72 in the same manner as cam 50 is located relative to plug 36.

However, the insert or pin 76 is rotatable from the position shown in FIGURE 8 in the direction of arrow 84 to the position shown in FIGURE 9. It will there be apparent that the recess defined by depression 75 and cut-away insert portion 78 are of the same shape as cam 50a and in the same relation to cylindrical cavity 72 as cam 50a is to its plug 3.6.

Thus, the cylindrical lock plug of the instant invention, both that shown in FIGURES 3 and 4, and the modification shown in FIGURES 5 and 6, may be selectively diecast in the mold or die 70 by rotation of the pin 76 to the position of either FIGURE y8 or FIGURE 9. The pin 76l -may also serve to eject the cast product.

From the foregoing, it is -seen that the present invention provides a unique and highly advantageous cabinet-type lock construction, as well as novel apparatus for manufacturing the same, and otherwise fully accomplishes itsv intended objects.

Although the present invention has been described in some detail by way of illustration and example for purposes of clarity of understanding, it is understood that certain changes and modifications may be made within the spirit of the invention and scope of the appended claims.

What is claimed is:

1. A file-cabinet-type lock comprising an elongate body,

said body having a longitudinal opening extending inward through one end and terminating in a transverse opening extending inwardly through one side into said longitudinal opening, said body being formed with a pair of circumferentially spaced longitudinally extending recesses interiorly of said longitudinal opening, a generally cylindrical plug rotatably engaged in said longitudinal opening and having a key slot opening through said one body end, said plug being provided with transverse cutouts, wafer tumblers in said cutouts extensile and retractile relative to said plug for locking extension into and releasing retraction lfrom each of said recesses of said body, a bolt in said transverse opening slidably extensible and retractible relative to said body, interfitting formations on said plug and bolt for effecting extension and retraction of the latter upon rotation of said plug to selected positions of said wafer tumblers proximate to respective recesses for selective location of said plug in position with said bolt extended or retracted, resiliently yieldable tumbler-extension means urging said tumblers toward extended position for retraction by insertion of a key in said slot, resiliently yieldable bolt-extending means, said intertting formations serving to retract said bolt against the force of said bolt-extending mean-s, said interfitting formations comprising a follower on said bolt for movement therewith and facing in the direction of bolt extension, and a cam projecting from said plug into the path of movement of said follower with said bolt, said cam being configured to depress said follower for retracting said bolt upon rotation of said plug, one surface of said cam being complementary to said follower for stable seating engagement with the latter when said bolt is extended, and an additional surface on said cam being spaced from said one cam surface and complementary to said follower for stable seating engagement with the latter when said bolt is retracted.

2. A lock comprising an elongate body, said body having a longitudinal opening extending inward through one end and terminating in a transverse opening extending inwardly through one side into said longitudinal opening, a generally cylindrical plug rotatably engaged in said longitudinal opening and having a key lslot opening through said one body end, said plug being provided with transverse cutouts, wafer tumblers in said cutouts extensile and retractile relative to said plug for locking and releasing engagement relative to said body, a bolt in said transverse opening slidably extensible and retractible relative to said body, interlitting formations on said plug and bolt for effecting extension and retraction of the latter upon rotation of said plug, resiliently yieldable tumbler-extension means urging said tumblers toward extended position for retraction by insertion of a key in said slot, said body having at least one internal recess in said longitudinal opening for receiving said tumblers in extended position to lock said plug against rotation, and resiliently yieldable bolt-extending means, said interfitting formations serving to retract said bolt against the force of said bolt-extending means, and said internal recess being located to receive said tumblers when said bolt is extended, said interiitting formations comprising a cavity on said bolt having a follower surface facing in the direction of bolt extension and an abutment surface facing generally opposite to said follower surface, and a cam projecting from said plug into said cavity in the path of movement of said follower surface, said cam including lone extending end portion configured to depress said follower -surface for retracting said bolt upon rotation of said plug, and another extending end portion for abutting engagement with said abutment surface when said bolt is retracted to limit movement of said cam and plug, one surface of said cam between said extending end portions being complementary to said follower surface for stable seating engagement with the latter when said bolt is extended.

i 3. A lock according to claim 2, said cam being c011- 892,383 6/1908 Small 70-81 figured for rotation clear of said abutment surface and 146,273 1/1874 Palmer 70-86 having an additional cam surface spaced from said One 1,979,805 11/ 1934 Main 70-134 cam surface complementary to said follower surface for 2,573,061 10/1951 Raymond 70-81 stable seating engagement with the latter when said bolt 5 2,585,643 2/1952 Feldmann 70-81 is retracted.

References Cited MARVIN A. CHAMPION, Primary Examiner. UNITED STATES PATENTS BOBBY R. GAY, Examiner. 1,805,891 5 1931 Shinn 70-3 64 EDWARD J. MCCARTHY, Assistant Examiner.

1,877,404 9/1932 Jacobi 70-364 10 

